Ignition-switch block



S. L. GADBURY IGNITION SWITCH LOCK Aug. 28, 1923.v

Filed Aug. 26

INVENTOR. Swamel L- flpw/dbuzy ATTORNEY Patented Aug. 28, 1923.

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aegis SAMUEL L. GADBURY, OF STOCKTON, CALIFORNIA.

IGNITION-SWITCH BLOCK.

Application filed August 26, 1921., Serial No. 495,682.-

To all whom may concern:

Be it known that I, SAMUEL L. GADBURY, a citizen of the United States, residing at Stockton, county of San Joaquin, State of California, have invented certain new and useful Improvements in Ignition-Switch Locks; and I do declare the following to. be a full, clear, and exact description of the same, reference being had to the accompany ing drawings, and,to the characters of reference marked thereon, which form a part of this application.

This invention relates to improvements in accessories or attachments for automobiles and par icularly. to, a device adapted to prevent the ignition circuit of the car be ng readily closed by any other than the rightful owner or driver, thereby preventing starting of the engine and the consequent theft of the car when the latter is left parked and unguarded at any time. l

The principal objectof the invention is to provide a combination lock mounted in connection with the switch or circuit closing member, the combination of which is only known to the proper parties.

This does away with the necessity of carrying the usual key, which can be easily duplicated, and frequently the owner fails to remove it from the switch box, or doing so, loses the same.

lVith my improved device, a key, or any removable member, is not. necessary, all the operating mechanism being permanently mounted on the car.

A furtherobject of the inventionis to produce a simple and inexpensive device and yet one which will be exceedingly effective for the purposes whichit is designed.

These objects I accomplish by means of such structure and relative arrangement of parts as will fully appearby a perusal of the following specification and claims.

In the drawings similar characters of reference indicate corresponding parts in the several views.

Fig. 1 is a front view of the lock.

Fig. 2 is a side or edge view of the same.

Fig. 3 is a rear view, with the back plate removed to show the interior mechanism.

Fig. 4 is a section taken on a line 4.-& of Fig. 1. .7 Y

Fig. 5 is a view of the insulation plate and contact member thereon.

Referring now more particularly to the characters of reference on the drawings, the numeral 1 denotes a flat and preferably cir-- cu'lar face plate adapted to be fastened onto the instrument board of a car, and having an annular and inwardly projecting flange or ring 2, covered onits inner end by a removable plate 3, these threemembers 'toget-her thus forming a casingfenclosin'g a definite area.

Turnably mounted in the plate 1 and pet jecting ther'ethrough in both directions is a j sleeve 4 fixed on the-inner end ofwhich is a:

which aredifferently shaped, but only one being the actual indicating finger, all of said fingers being in the plane of a dial12 on the plate 1, this dial being marked with if letters Or numbers all around.

Turnably mounted in .theisleeve and-pro;

.jecting. therebeyo'nd at both ends is a shaft 13, on the inner end of'which adjacent the disc 5 is a similar disc lt providrl with a peripheral notch 15. Beyond the disc and fixed therewith is a ratchet wheel 16, oppositely disposed to the similar member v7, and V engaged by. a spring-pressed, pawl 17 mounted on the plate 3.

The outer end of the shaft has an adjust able knob or handle 18 thereon, fixed with:

all shaped different and one at a time serv ing .as the actual indicating finger, all'of and projecting from which are fingers 19f.

which fingers point on a dial 21 marked "l similarly to the dial 12 and positioned on theouter face of the knob 9.

Positioned radially of the discs and in the plane thereof is a rack bar 22 slidably mounted in. ablock23in the casing, the notches 6 and 15 being ofisufficient width to receive the outer end of the rackthereim-the length of the latter being suchthat. it extends from the casing wallto the discs, andcannormally have no movement. Meshing with the rack is a pinion 24: fixed on a stem 25 turnably mounted in the plates 1 and 3, and pro-- j ecting through both. The outer or forward endof the stem hasa handle 26 thereon,

o0 or, I

while on the other end is an insulated arm 21 adapted to pass over and bear down on a spring strip 28 mounted on an auxiliary plateQi) of. insulation material fixed to the casing beyond the flange 2. This strip when pressed down contacts with a pair of binding post members mounted on the plate 29 and interposed in an electrical circuit.

The dial 12 is preferably a fiat ring separate from the plate 1, and mounted thereon by means of screws l2 passing through pe- 'ripheral slots 12 in the dial plate'so that the latter may be turned, a small finger lug 12 being provided on the dial plate for the purpose. p

In this manner, when the switch is closed and'the knobs cannot be turned, thereby allowing any party to see the symbol against nation, the dial itself can be turned to show the fingers pointing to different, and incorrect symbols. r e

Also, as an aid in the prevention of undesired opening of the combination, the fingers 10 may be formed of a pair of separate plates, so that the position of setting'of the fingers relative to each other maybe altered at any time, thereby helping to confuse any one attempting towork the combination.

In operation, when neither of the notches '6 and 15 are positioned to allow the rack to enter therein, the latter can have practically no movement, and neither of course can the stem 25 and switch arm 27.

When in this position, the said arm 18 turned out of enga-gement with the contact strip 28 and the circuit is brokenz'l -To position the notches of both disks "in V al-inement'so that the stemfand" switch arm.

may be turned, the larger knob 9 is first rotated,wh1ch can be done only 111 0118 d1rec tioir'on account of the ratchet and pawl,

1 until the notch in the disc 5, directly connected to the knob, is in alinement with the rack. V

The correct positioning of the disc is controlled by the operator by reason of; the finger 1-1 pointing to or registering' directly with" a'certain one of the symbols on the dial 12, the disc itself is of course invisible when the parts are assembledwithin the casing.

Having set the-disc 5', the other disc 14: must then. be similarly set, to bring the notches 111 both" discs in al-inement with each other.

To do this, the knob 18 is turned until the finger points to a preselected symbol on the dial 521. This knob however must be turned in the opposite direction to the knob 9, on

account of the opposed or reversed setting of the respective ratchet members, which prevents the turning of the knob first set when the other one is then turned.

By adjusting the position of the knob 18 and the fingers fixed thereto on'the shaft 13, the dial-symbol to which the finger 20must ch tie fin 'ers point to work the combi point to bring the proper alinement of the disc-notch, may be varied at'any time.

Also, one of the other fingers maybe used instead of any certain one, thereby fooling anyone attempting to open the combination .who might assume from once seeing the device operated, that a certain finger was the master or proper indicating finger. When the switch is opened, a movement of either of the knobs will. serve to break the combination and prevent. the switch. from being closed. 7 I

From the foregoing description it will be readily seen that I have produced such a device as substantially fulfills the objects of theinvention as set forth herein.

v'Vhile thls speclficatlon se-ts forth in de of the device, still in practice such deviations from such detail may be resorted to as tail the present and preferred construction do not form a departure from the spiritof the invention, as defined by the appended claims. i

Having thus described my invention, what I claim asnew and useful and desireto se cnre by rs Patent, is ,7

1. Ina sw tch lock,'a fixedplate, a of'dials, onefsnch dial beingadjacentthe plate, a switch closing member, knobs for the dials turnably mounted on "the plate, means pair 7 whereby the knobs must be rotated to bear a predetermined relation to each other be fore the closing member be actuated,

fingers mounted withthe knobs and pointing on the corresponding dials, the dial adjacent the plate having-peripheral slots, and screws in the plate passing through said slots.

2. An ignition switch lock comprising a casing, a pair of independently turnable and concentrically mounted discs therein, means for. turning the discs from outside the casing, the discs having peripheral notches therein, a switch,a rotatable switch-closing member mounted in the casing, a pinion on r the switch closing member within the casing,

a rack bar engaging the pinion'and slidably mounted in the casing, and means whereby said bar can only have any such movement- When the disc-notches are in .alinement with and being adapted to e'nterthe notches therein when the discs are moved to position both said notches in alinement with the bar.

4. In a switch lock a pair of dials, a switch closing member, tui'nable knobs for 5 tile dials, means whereby the knobs must be rotated to beat a predetermined relation to each other before the closing member may be actuated and fingers projecting from the Knobs and pointing on the correspondin dials and means whereby one of said dials 10 may be rotatably ad usted relative to and independent of its kno In testimony whereof I'aflix my signature.

SAMUEL L. GADBURY.

Certificate of Correction.

It is hereby certified that in Letters Patent No. 1,466,227 9, granted August 28, 1923, upon the application of Samuel L. Gadbury, of Stockton, California, an error appears requiring correction as follows: In the grant and in the heading to the printed s ecification, title of invention, for Ignition-Switch Blocks read Ignition- Switch. 0010s; and that the said Letters Patent should be read With this correction therein that the same may conform to the record of the case in the Patent Oflioe.

Signed and sealed this 9th day of October, A. D., 1923.

[SEAL] WM. A. KINNAN,

Acting Commissioner of Patents. 

